DFTG-1309 – Basic CADPrepared by Trung Bui, Instructor

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Session 5

Drawing Rectangles, Polygons

Editing 4

Isometric Views

AutoCAD 2018 and Its Applications Comprehensive:

25th Ed. Ch. 4: p. 95 (Drawing)

Ch. 11: p. 305 (Editing)

Ch. 8: p. 221 (Isometric View)

17-1107

Contents

1. Drawing rectangles, Polygons

2. Editing 4 (Divide, Trim, Extend, Stretch, Lengthen,

Fillet, Chamfer)

3. Isometric Views

4. Assignment 5A, 5B, 5C

6. Drawing Rectangles

Drawing rectangles have 2 options.

1. Drawing Rectangle from 2 opposite corner:

We have 2 options for corner, they are chamfer and

fillet

First corner point second corner point

6. Drawing Rectangles

We have 2 options for thickness .5 it was viewed in 2D

But in 3D

6. Drawing Rectangles

type w (width), type .5

But need set chamfer =0type c (chamfer), fillet =0 type f (fillet)

and type t (thickness) thickness=0.

6. Drawing Rectangles

2. Drawing Rectangle from length and width:

Drawing the Rectangles

In class practice

In this Section, I show you how to draw the

Rectangles be shown below:

1. Type units

Return AutoCAD 2018 to draw

Pick

First set up Units

5. Drawing Regular Polygons

We have 2 options.

1. Inscribed circle

or

5. Drawing Regular Polygons

2. Circumscribed circle

or

Drawing the Polygon

In class practice

In this Section, I show you how to draw the Polygon

be shown below:

1. Type units

Return AutoCAD 2018 to draw

Pick

First set up Units

9. Dividing Objects

Type div↓

Pick object

Type 4↓

Editing (Cont.)

In this section, I show you how to Divide object

have been drawn below.

Return AutoCAD 2018

10.Trimming Objects

Type tr↓,

pick objects

(right click)

Pick objects

To trim

(right click)

Pick object

Pick object to trim

process

process

Result

Result

Trimming Objects

Type tr↓,

pick objects

(right click)

Pick objects

To trim

(right click)

Pick object

Pick object to trim

Resultprocess

Trimming Objects

Type tr↓,

pick objects

(right click)

Pick objects

To trim

(right click)

Pick circle

Pick object to trim

Pick 2 lines

Pick Circle Result

Result

process

Trim the Object

In class practice

In this section, I show you how to trim object

have been drawn below.

Return AutoCAD 2018

In this section, I show you how to trim object

have been drawn below.(select all object)

Return AutoCAD 2018

11.Extending Objects

Type ex↓

Select all of objects

(right click)

Hold shift to trim

Pick object to extend

1. Pick object to

extend

Pick object to extend

2. Hold shift + Pick

object to trim it

2. Hold shift + Pick

object to trim it

Resultprocess

Extending Objects

Type ex↓

Select all of objects

(right click)

Hold shift to trim

Pick object to extend

1. Pick 2 object to extend

Pick 2 object to extend

2. Hold shift + Pick

object to trim it

2. Hold shift + Pick

object to trim it

Resultprocess

Extend the Object

In class practice

In this section, I show you how to Extend object

have been drawn below.

Return AutoCAD 2018

12.Stretching Objects

Select object, move the cursor close the point of object that need

stretch pick stretch and

move cursor out

Do same for circle

process

process

Result

Result

Stretching Objects

Do same for rectangle Result

Result

process

Stretching Objects

Do same for rectangle with vertex

Do same for below shape

Result

Result

process

process

Stretching Objects

Do same for below shape with add vertex

Do same for shape with remove vertex

Result

Result

process

process

Stretch the Object

In class practice

In this section, I show you how to Stretch object

have been drawn below.

Return AutoCAD 2018

13.Lengthening Objects

Select object, move the cursor close the point of object that need

Lengthen pick lengthen

Move cursor out

And right click

Do same for circle

Result

process

process

Lengthening Objects

Move cursor out

And left click

Do same for ellipse

Move cursor down and right click

Result

Resultprocess

Lengthen the Object

In class practice

In this section, I show you how to lengthen object

have been drawn below.

Return AutoCAD 2018

Example

Redraw the circle R=1 with center lines

Type c↓, and the center lines

stretch the center lines more 3/8” at 2 side

Example

Redraw the circle R=1 with center lines

Type c↓, and the center lines

stretch the center lines more 3/8” at right side,type 3/8↓

Example

Do same for left side circle

For top circle

For bottom circle

14.Filleting Objects

Type f↓, we need setting mode=trim,radius=0 (type t,r)

Pick all objects

(right click)

Trim the

line 1

Extend the

line 2

Extend the

line 2

Result

Result

process

process

Filleting Objects

Pick the first line is important to trim second lineTrim the

left line 1

Pick 1

Pick 1

Pick 2

Pick 2

Trim the

right line 1

Result

Result

process

process

Filleting Objects

Setting radius :Type f↓, r↓, number↓

Pick all objects

(right click)

curve line 2 Trim line 1

curve line 2

Result

Result

process

process

Filleting Objects

Setting Trim :Type t↓,select no trim with radius

No Trim

No Trim

Result

Result

process

process

Fillet the Object

In class practice

In this section, I show you how to Fillet object

have been drawn below.

Return AutoCAD 2018

15.Chamfering Objects

Type cha↓, we need set mode chamfer distances, with trim

Pick object

(right click) Pick 1

Pick 2

Resultprocess

Pick 1

Pick 2

Pick 1

Pick 2

Chamfering Objects

Setting distances :Type d ↓,

type number 1↓(for d1)

type 2 (for d2)

Result

processPick 1

Pick 2

Pick 1

Pick 2

Chamfering Objects

Setting angle :Type a ↓,

type number 1↓(for d1)

type 2 (for angle with d1)

Resultprocess

Pick 1

Pick 2

Pick 1

Pick 2

Chamfering Objects

Setting Trim :Type t ↓, select notrim

Resultprocess

Pick 1

Pick 2

Pick 1

Pick 2

Chamfer the Object

In class practice

In this section, I show you how to Chamfer object

have been drawn below.

Return AutoCAD 2018

Multiview Drawing (Cont.)

2. Draw Isometric View:

Step 1: Isometric view is 2D drawing but look like 3D inclusion

Isoplane left, right, top. They were drawn on ox, oy, oz.

Setting Isometric view: type os↓ (set snap) or pick polar tracking,

pick tracking setting

Multiview Drawing (Cont.)

Left click Isometric snap

We got Isoplane left (press F5 to change it)

Multiview Drawing (Cont.)

We got Isoplane right (press F5 to change it)

Isoplane top

Multiview Drawing (Cont.)

Step 2: the ver / hor lines be drawn with F8 on, Snap point on

and F5 to change Isoplane

Step 3: the oblique lines be drawn pass 2 point that they will be

specify ver /hor.

Multiview Drawing (Cont.)

Example: Redraw the part. Don’t include dimensions.

Step 1: Set Isometric view

To see easily we set isoplane left

be blue plane.

Isoplane top be yellow,

Isoplane right be red.

Example:

Step 2: Let draw the shape on isoplane left

(the ver / hor lines be drawn with F8 on, Snap

point on and F5 to change Isoplane)

Press F5 to select iso-left,

(object layer)

Type L↓, move the cursor up

Type 6↓

Example:

Move the cursor to right

Type 3↓

Example:

Move the cursor down

Type 3↓

Example:

Move the cursor to right

Type 2↓

Example:

Move the cursor down

Type 3↓

Example:

Move the cursor to left

Snap to start (right click)

Example:

Press F5 to select iso-top,

Type L↓, move the cursor

To snap the top corner

Example:

Move the cursor up

Type 6↓

Example:

Move the cursor down

Type 3↓

Example:

Move the cursor to left

To snap the corner

Right click

Example:

Type L ↓ ,move to the corner to snap it

Example:

Move the cursor to right

Type 2↓

Example:

Move the cursor down

Type 4↓

Example:

Move the cursor up

Type 4↓

Example:

Move the cursor to left

Type 6↓

Example:

Move to the corner to snap it

Example:

Press F5 to select iso-right,

Type L↓, move the cursor

To snap the top corner

Example:

Move the cursor down

Type 3↓

Example:

Move the cursor left

Type 4↓

Example:

Move to the corner to snap it

Right click

Example:

Type L↓, move the cursor

To snap the top corner

Example:

Move the cursor down

Type 3↓

Example:

Move the cursor left

To snap the corner

Example:

Type L↓ to connect 2 point

Example:

Step 4: drawing the circle on isometric view

On Isoplane left, Pick center layer to draw center mark of circle.

Pick object layer

Type el↓,

Type i ↓

Multiview Drawing (Cont.)

Pick center point of ellipse

Type radius↓

Multiview Drawing (Cont.)

On Isoplane top, Pick center layer to draw center mark of

circle.

Pick object layer

Type el↓,

Type i ↓

Pick center point of ellipse

Multiview Drawing (Cont.)

Type radius↓

On Isoplane right, Pick center layer to draw center mark of

circle.

Multiview Drawing (Cont.)

Pick object layer

Type el↓,

Type i ↓

Pick center point of ellipse

Multiview Drawing (Cont.)

In this section, I show you how to Draw the

Isometric Circle have been drawn below.

Return AutoCAD 2018

Assignment 4A

Assignment 4B

Assignment 4C

The End